html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    background-color: #f2f3f5;
    /* overflow: hidden; */
}

.layui-card {
    margin: 20px 20px 0 20px;
}
.layui-card-header{
display: flex;
justify-content: space-between;
align-items: center;
}